/*
 * Copyright (C) 2012 Google Inc.
 * 
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
 * use this file except in compliance with the License. You may obtain a copy of
 * the License at
 * 
 * http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations under
 * the License.
 */

package interactivespaces.activity.component;

import interactivespaces.configuration.Configuration;

import java.util.Collections;
import java.util.List;

/**
 * A support class for implementations of {@link ActivityComponent}.
 * 
 * @author Keith M. Hughes
 */
public abstract class BaseActivityComponent implements ActivityComponent {

	/**
	 * A list of no dependencies.
	 */
	@SuppressWarnings("unchecked")
	private static final List<String> NO_DEPENDENCIES = Collections
			.unmodifiableList(Collections.EMPTY_LIST);

	/**
	 * Component context this component is running under.
	 */
	private ActivityComponentContext componentContext;

	@Override
	public List<String> getDependencies() {
		// Default is no dependencies
		return NO_DEPENDENCIES;
	}

	@Override
	public ActivityComponentContext getComponentContext() {
		return componentContext;
	}

	@Override
	public void configureComponent(Configuration configuration,
			ActivityComponentContext componentContext) {
		this.componentContext = componentContext;
	}
}
